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vekshin1
3 years ago
5

Please help! And 20 points! :3 I need help with these 3 questions- -3-||

Mathematics
1 answer:
7nadin3 [17]3 years ago
7 0

Answer:

1.60% 2. 15 3.46

Step-by-step explanation:

1. 30+20 =50  30eggs/toatl eggs 50 = 60%

2. 1-.2=.8   12*.8 =15 can double check by 15*.8

3. .9*50=46

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Help! <br> serious answers only please!!!
Greeley [361]

Answer:

a

Explaination:  

7 0
3 years ago
Read 2 more answers
Solve the equation sin2x = 3cos2x. The value of x that satisfies the equation if x lies in the second quadrant is °. The value o
faltersainse [42]

Answer:

126\degree

and

126\degree

respectively.

Step-by-step explanation:

The given trigonometric equation is

\sin2x=3\cos2x


We divide both sides by \cos2x to get,

\frac{\sin2x}{\cos2x}=3


This implies that,

\tan2x=3


We take the inverse tangent of both sides to get,


2x=\tan^{-1}(3)


\Rightarrow 2x=71.565


\Rightarrow x=35.7825

\Rightarrow x\approx 36\degree


Since the tangent ratio has a period of 180\degree, another solution is


x=180+36


x=216\degree to the nearest degree.


In the third quadrant,


2x=180+71.565


\Rightarrow 2x=251.565

\Rightarrow x=125.7825

\Rightarrow x=126\degree


The solutions are

x=36\degree,126\degree,216\degree


The value of x that satisfies the equation if x lies in the second quadrant is 126\degree


The value of x that satisfies the equation if x lies in the third quadrant is216\degree



5 0
3 years ago
There are 6 blue marbles, 7 black marbles, 4 orange marbles, and 3 green marbles in a bag. Once a marble is drawn, it is replace
Aloiza [94]

Answer:

Step-by-step explanation:

step:-  1

The bag contains six blue marbles,seven black marbles , four orange marbles

and three green marbles

The total marbles contains in a bag        6+7+4+3=20

Two marbles can be drawn one after one with replacement

The total number of ways in which two cards drawn one after another with replacement  

<h3>n(s)  =2020 C_{1} X20 C_{1}=400</h3><h3>The no of favorable cases n(E)= 4C_{2} =\frac{4!}{4-2)!2!}</h3><h3>=6</h3><h3>Required probability  P(E)=\frac{n(E)}{n(S)} =\frac{4}{400} =\frac{1}{100}</h3>
4 0
3 years ago
When something increases threefold (3 times) is that 300% on the initial number?
Basile [38]

Answer:

Yes

Step-by-step explanation:

300% when converted to a fraction is 3/1 which is 3. hence, you are correct to say that

You can have a look on the ways to convert between fractions and percentage on my Instagram (learntionary) if you are interested. I do post other good tips for math there too thanks!

5 0
3 years ago
A sum of $5000 is invested at an interest rate of 5% per year. Find the time required for the money to double if the interest is
Temka [501]
5000e^.05t=10000 solve
4 0
3 years ago
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